Boat and propeller mechanism.



P. B. COOK.

BOAT AND PROPELLER MEGHANISM.

APIPLIOATION Hpnn DEO.4,1908.

91 6,846. Patented Mar. 30, 1909;

FRANK E. COOK, OF TRAVERSE G TY, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, OF

ONE-HALF TO THORNTON MITCHELL, OF TRAVERSE CITY, lll'IGHIGAN.

I) ERUEELLEREx/ZEGHAEHSIM.

No. 916,846. Specification of Letters Patent. Patented March 38, 1909.

intimation filed December i, 190 Serial No. 66,031.

To (.5' tag, comer j on ei her si e of the central heel the sinn- Coot. a crtrlariy disgjo ed shatts h. seated at the sam or have have iin'ented co: grovcments in. 1Cl1fi11l811 and 1 do dere following to he 1 clear, and

non or the inv i will enable others s zilled in the art sin (all,

it on, such as to which it aonertains to make and nse the same, tle accoinoanvinp' ice being had to drawings, and to t re inarhed thereon, which sneci'lioation.

I This invention pellor Wheels at driven through the tendency to raise tl as to impart a jl or- By the ovision o n an excessive spec The invention co construction, coin iations and incnts ol' parts which will he hereinlter fully described. and then spec ical y defined in the appended claini.

My invention is ills trated in the accornpan 1g drawings, in which? Figure 1 side eleva a heat con sti ted in accordance with my invention. Fig. 2 is a cotton an view, and F 3 is a cross sectional view.

the drawings o of a boat, cross section 0'- Fig. 3, having a comp-er B v..-th flaring; sides D. rear of the boat is t he use. ellcr fixed "t s 5 n either side of the lin tail and sligltl in advance of said "propeller E, a shaft T projects through the hull of the host at any suitable angle, preferably twenty-five degrees, and a propeller H is fixed to each shaft J. Mounted aniidships Boat and 1 Ward movement thereto and Wll shafts G and l "T N 1 '3 l "r he is a n o .eller wheel o. the J 1 'n s U coat a i acent b0 the locatio r rel its r sha ll project the ethrongh recessed away at N, the Wall of which extends below the propeller U and a'l'lords means for -protecting; the blades thereof against any oreign matter which other vise might come in contact therewith. In Fig. 2, S aes' nates diagonal engines, one Being provided for driving each shaft.

In operation, the prope lers upon the inclined shafts being driven of ya i speeds Will have a tendency to raise the l r in the Water at the same time of iin a for forward argcr and s met ited movement is accelerated by a ill driving propeller Wni h 3 upon tl'ie horizontal shaft .3. l ivt nowcrfol nroveincnts iivqiarted to shaft 12:, the widened portion the hull of the boat will he seated so as reduce to minimum the frictional contact of the ST- face of the heat which comes in contact with the Water, the faster the rotary movement "in; arted to the shafts being tending; to raise the boat and lessen the friction.

hat I claim to be new lu: in combination with the hull of a coat having a main prog'iellor, propelling shafts positioned substanti ly at of twentylive degrees to the nor endicnlar, one upon either side and slightly above said niain propeller shaft and project 1g nnderne th "in tail of the boat, pro 'icllers noon the heat hoin away at opposite posi vions in advance l transverse center of the hull, "propeller shafts projecting through the hull, one in each of said recesses and at angles of substantially twenty-five degrees to the "perpendicular, substantially as shown and described.

In testimony whereof l hereunto a'll'ih my signature in the presence of t JO Witnesses.

L in: f @053 i.

shafts, the hull of 

